Short answers, pulled from the story.
The Rome Statute officially classified racial segregation as a crime against humanity in 2002. This legal shift transformed social prejudice into an actionable international offense.
The Tang dynasty issued an edict in 779 that forced Uyghurs to wear ethnic dress and stopped them from marrying Han Chinese females. Governor Lu Chun enforced similar rules in Canton in 836 that banned foreigners from owning property and made it illegal for Chinese to form relationships with Dark peoples.
German praise for America's system of institutional racism appeared continuously throughout the early 1930s, directly inspiring the two principal Nuremberg Laws passed in Nazi Germany. The ban on interracial marriage prohibited sexual relations between people classified as Aryan and non-Aryan, with Aryans facing incarceration in concentration camps while non-Aryans faced the death penalty.
By 1968, all forms of segregation had been declared unconstitutional under Chief Justice Earl Warren. The Fair Housing Act of 1968 also prohibited discrimination in housing sales based on race or color.
On the 28th of April 2007, the lower house of Bahraini Parliament passed a law banning unmarried migrant workers from living in residential areas. Sadiq Rahma stated rules were designed to protect families from laborers who live in groups of 50 or more.